Sewage Treatment plants receive domestic, industrial, and sometimes stormwater runoff, treating it to remove harmful substances before releasing it back into the environment. The process starts by removing large solids and debris from the water. Biological processes then use microorganisms to break down organic matter to reduce pollutants. Some plants include extra stages for advanced filtration and disinfection to remove remaining contaminants, nutrients, and pathogens, further purifying the water. The solids separated during the treatment process, known as sludge, undergo further treatment and can be repurposed as fertilizers.

GIM boasts 2 sewage treatment plants which were installed in 2010 & 2020. These have a capacity of 80 cu. m. and 55 cu. m. respectively. The treated water is reused for GIM’s floriculture and arboriculture.
It aligns with SDG Goal 6: Clean Water and Sanitation, Goal 11: Sustainable Cities and Communities, Goal 12: Responsible Consumption and Production, Goal 13: Climate Action and Goal 15: Life on Land.